Investigating the effects of shredded plastic bags and plastic bottles on the flexural strength of a concrete beam

Date of Publication

2016

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Civil Engineering with Specialization in Structural Engineering

Subject Categories

Civil Engineering | Structural Engineering

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Thesis Adviser

Richard M. De Jesus

Defense Panel Chair

Adam C. Abinales

Defense Panel Member

Bernardo A. Lejano
Andrea Wisnton C. Oreta

Abstract/Summary

Strength is an important property of concrete. This is because the durability of the structure is dependent on the strength of concrete. In this study, the researchers investigated the effects of shredded plastic bags and plastic bottles on the flexural strength of concrete. The reason for these are to reduce plastic waste as well as to find alternative use of plastics. These are also more economical alternatives for the conventional materials used in reinforcements for concrete.

This study investigated whether the partial addition of plastics and plastic bottles will have an effect on the strength of concrete. The strength analysis was based on ASTM Standard C496, ASTM Standard C39 and ASTM Standard C78. Concrete specimens were tested with water-cement ratio of 0.4, and a weight percentage of 0.5%. The shredded plastic fibers were thoroughly mixed with the concrete mix and the specimens were moist cured for 28 days. After 28 days the specimens were tested for tensile strength, flexural strength and compressive strength. The strength observed from the tests were used to relate the effects of plastics on the mechanical properties of concrete. The study was extended by further analysis on the flexural strength of the beam specimens in terms of their cracking moment and deflection.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU18963

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

x, 79 leaves, illustrations (some color), 30 cm.

Keywords

Concrete--Testing; Concrete--Additives

Embargo Period

5-10-2021

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